Chain saw case



FIG. 1 is a front elevational view of a chain saw case showing our new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a top plan view;

FIG. 6 is a bottom plan view;

FIG. 7 is a left rear perspective view; and

FIG. 8 is a right front perspective view. 

The ornamental design for a chain saw case, as shown and described. 